Window-scaffold.



J. M. OBERTI.'

` wmnow s cAFFoLn. 4APPLICATION FILED AUG-4, 19)@ Patented 11111513; 1916 'UNITED sTATEs PATENT oEEicE.;

JAiviEsM. OBERTI, E s {AN FRANCISCO, CALIFORNI.

WINDOW-SCAEEOLD, v

To all whom t may concern.'

Be it known that I, JAMES M. OBERTI, a

citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvementsin Vindow Scaf-V folds, of which the yfolloi'ving is a specification. Y

The object of the present invention VVis to provide a window scaffold so constructed that its own weight will itself assist in se-V curing it in place, which will be readily ad- 1 justable for different sizes and shapes of window sills, and which will be provided with means for conveniently holding a4 bucket or other receptacle used by the winf dow cleaner. In the accompanying drawing, Figure 1 is a side view of my improved window scaf-l fold; Fig. 2 is a plan view thereof; Fig. 3

is a rear view thereof; Fig.Y 4 is a detail front view; Fig. 5 is a section on the Fig. 4.

line 5*-5l of VReferring to the drawing, 1 indicates main frame, preferably made of gas pipe7 Y and comprising twoside members 2, and an i rest upon the top of the wall, as alsoshown end member 3. Around theouter portions of the side members are secured by bolts and nuts U-shaped clamps 4, between the memberswof each of which clampsis pivoted upon,

the bolt the free end of a side member 5 of a yoke-shaped brace 6, also preferably made of gas pipe, to the cross bar 7 of which, near its ends, are pivoted curved feet 8, said feetl being rotatably secured upon said cross bar by pins 9 driven into said cross bar. These feet are connected vwith each other by a rod 10. In luse these feet are placed upon the outer portion of the window sill, and have hooksshaped upwardly extending outer portions 11 adapted to rest upon the outermostV portion `of the window sill and upwardly extending inner portions 12 adapted t0 abut against the shoulder 13, usually found onl such window sills and to extend forwardly "over said shoulder. However, if the outside wall of the building be formed with a square edge below the window, as shown in dotted lines, then the feet can be turned around so that `the outer ends are then uppermost and in dotted lines. In order to retain the feet in the position suitable for all thefwindows of a building, there is provided a chain` 15 attached to the rod 10 and which is adapted to be engaged by ahook720 Specification of Letters Patent. Patented June 13, 1916." Application ined August 4, 1915. i serial No. 43,578.,

the adjacent side member2.

Near the inner ends of the side members of the main frame are lsecured therearound hangers 14, each formed, 0f sheet metal secured around straps bent in the middle around 4,the side member land spaced fromfeach other by means ofk a pair of plates -16 interposedbe-v tween the two halvesl of the sheet metal. hanger and securedvby rivets 17throughsaidk plates'16 and the twohalves of each hanger. The twohangers are held `at'the proper distanceapart by means of a transverserodlSf the ends of which are riveted to the hangers. Each of the hangers is adjustablysecured to the side member of the main frame by means of a cotter pin 19 passed. through a hole21 in the hanger and also through one of a sei ries of holes 22 inthe side member, so that the hanger can be adjusted longitudinally on the side member. p

The outer .portions of the two plates `16 1 are bent at right angles in yopposite direc tions, andV secured uponltheirjouter facesis a pad23 which isadapted to rest against Betweenfthe lower portions of the two halves ofeach hanger/are interposed platesA 24, the outer ends of which' are bent out-V wardly at right yangles-,in n opposite direce" .tionsto one another, and carry a lower pad.

26, these plates having a longitudinal series of pairs of holes 27,*any pair of 'whichcan register with any pair of vertical series of 'pairs of holes 28 inthe Vtwo halves of the hanger. VSaid pad carrier can thus be adjusted either horizontally through the hanger or vertically therethrough, being guided by a guide 29 having arms or extensions 31 surroundingvthe edges of the hanger and slidable vertically thereon, said guide being v also formed with a h ole 32 adapted to regisbar the ends of which are twisted and bentr around the end member ofthe mainframe to forni pivots 38 for said back. The two sides -of the back are connected to one an- 110k 780 the vinner face of the sill or window'frame,

" other bymeansofabrace 39, and from said sides 'extend braces41, which' are pivoted,

' as shovvnat 51, aroundthe right-hand'side as shown at 42, to braces48, vwhich are pivoted, as VVshown at 44, to clamps 46 Secured 'in the side memberswo'f the main frame.

When said back is suiiiciently raised the arms 4I and 43 on'each siderareY in alinement -vvitheach other, and a slide piece 47 j on'the brace"`41 can then be moved over an 10 extension 48 ofthe; brace 43` so yas to retain said 'braces 4l' and 43 in alinement.

In one side, preferably the right, of the seat o r platform arevformed recessesV through Which pass 'terminalY portions of a stout Wire yole749,"said terminal 4portions being bent,

f member-f2 of the main frame, to form' pivots ,thereonQandfbeing' extended beyond said "pivots, fasshown at y52, toabut against the under side of the seat or platform when the Y yokeextends outwardly fromv said side mem- Vber,"said.yoke'being then adapted to support a bucket'orother receptacle. 'When not in `use they yoke is collapsed and lies on the seat or platform, Y n

-clai rn :'f-f I l jV 1,1. VInawvindovv cleaning chair, the comi Sill of the vvindovvfand means secured to said`main frame [for detachably engaging j the inner side of. vav Window. i 1V-2Q In a Window cleanmg chair, the comblnation of va mam frame, a yoke-shaped v lbrace lpivoted at its ends 4upon respective l; l copie! of 'patent linda!l byro'btained for sideportion's offthe mainframe, feet pivoted-upon the cross `bar of Athe brace, each having portions extending in one direction from thepivot to engage the sill of the Window, and a portion extending in the opposite direction adapted to; abut against a shoulder on the Window sill, and means secured to said` main frame for detachably engaging the inner side of a Window. n

3. Y In a Window cleaning chair, the combination of a main frame, a yoke-shaped brace pivoted at its end 'upon respective side portions oi' the main frame, feet pivoted upon the cross bar of the brace, each having portions extending in one direction from the pivotJ to engage the sill of the Window, and a portion extending in the opposite direction adapted to abut against a shoulder on the Window sill, and a hook-shaped rear portion, and means secured to said main frame for detachably engaging the inner side ofa Window.

4. In a Window cleaning chair, the combination of a seat or platform having a side bar, means for removably securing it to a Window frame,and a Wire'yoke havingits terminal portions bent around the side member of the seat to form pivots thereon and extending beyond said pivots to abut against the under side of the seat when the yoke extendsoutwardly from the side member, said yoke being adapted to support a bucket or otherreceptacle.

In testimony whereof I have hereunto set Vmy hand in the presence of two subscribing witnesses.

, JAMES M. OBERTI.

Witnesses:

Y G. BALL, n

D. B. RICHARDS.

ve cents each, by addressing the Commissionerof l'atentl, Washington, 1D. C." 

